<template>
  <el-container class="home-container">
    <!--头部区域-->
    <el-header>
      <div><img src="../assets/heima.png" alt=""><span>电商后台管理系统</span></div>
      <el-button type="info" @click="logout">登出</el-button>
    </el-header>
    <!--内容区域-->
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'"> 
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#333744" text-color="#fff"
      active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
      <!--一级菜单-->
      <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
        <!--一级菜单模版区域-->
        <template slot="title">
          <!--图标-->
          <i :class="iconsObj[item.id]"></i>
          <!--文本-->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
          <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)"><template slot="title">
          <!--图标-->
          <i :class="iconsObj[item.id]"></i>
          <!--文本-->
          <span>{{subItem.authName}}</span>
        </template></el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!--右侧内容主体-->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menuList: [],
      iconsObj: {
        '125':'iconfont icon-bussiness-man-fill',
        '103':'iconfont icon-coupons-fill',
        '101':'iconfont icon-credit-level-fill',
        '102':'iconfont icon-form-fill',
        '145':'iconfont icon-shuffling-banner-fill'
      },
      //是否折叠
      isCollapse: false,
      // 被激活的链接
      activePath:''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
      const {data: res} = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data;
      console.log(res);
    },

    //点击按钮 切换展开
    toggleCollapse(){
      this.isCollapse = !this.isCollapse;
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath',activePath);
      this.activePath = activePath;
    }
  }
}
</script>
<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div{
    display: flex;
    align-items: center;
    span {
      margin-left: 15px; 
    }
  }
}
.el-aside{
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-main{
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
